/Engine/Source/Runtime/AudioExtensions/Public/IAudioExtensionPlugin.h
This function is called when a game world initializes a listener with an audio device thisIAudioPluginListeneris registered to. Please note that it is possible to miss this event if you register thisIAudioPluginListenerafter the listener is initialized.
virtual void OnListenerInitialize ( [FAudioDevice](API\Runtime\Engine\FAudioDevice) * AudioDevice, [UWorld](API\Runtime\Engine\Engine\UWorld) * ListenerWorld )